Mesotrione water dispersible granules and method for preparing same

A technology of mesotrione and dispersible granules is applied in the fields of botanical equipment and methods, herbicides, algicides, biocides, etc. problems such as poor stability, to achieve the effects of low cost, improved control efficiency, and low packaging requirements

Inactive Publication Date: 2013-11-06
LIANBAO CROP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But mesotrione suspending agent mainly has physical stability problem, and the dispersibility of original drug particle in its suspension is bigger, makes suspended particle have higher surface free energy and is in unstable state, causes original drug to easily gather, agglomerate block with precipitation
In addition, the suspending agent also has the problem of poor chemical stability
Various unfavorable factors have affected the efficacy of mesotrione. If the control effect of mesotrione suspending agent is to reach a higher level, it is necessary to increase the amount of application, but this will cause environmental damage. a lot of pressure

Method used

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  • Mesotrione water dispersible granules and method for preparing same
  • Mesotrione water dispersible granules and method for preparing same
  • Mesotrione water dispersible granules and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: 30% mesotrione water-dispersible granule

[0033]

[0034] According to the above formula, the materials are pulverized by airflow, then mixed evenly and kneaded with water, extruded and granulated by a granulator, dried and sieved to obtain the product.

[0035] Determination of physical and chemical properties:

[0036] Moisture content 2.0%, particle size detection 99.5% through 75μm mesh, suspension rate 92%, wettability ≤ 1min, dispersibility 90%, persistent foaming (1min) 10ml, accelerated thermal storage stability qualified. It meets the quality and technical indicators of water-dispersible granules.

Embodiment 2

[0037] Embodiment 2: 10% mesotrione water-dispersible granule

[0038]

[0039] According to the above formula, the airflow pulverizes each material, puts it into the fluidized bed, sprays atomized water through the spray gun above the fluidized bed, and the powder boiled by the airflow contacts with water evenly, and naturally forms as the fluidized bed wall rolls down. Granules, the product.

[0040] Determination of physical and chemical properties:

[0041] Moisture content 2.0%, particle size detection 99.5% through 75μm mesh, suspension rate 92%, wettability ≤ 1min, dispersibility 90%, persistent foaming (1min) 10ml, accelerated thermal storage stability qualified. It meets the quality and technical indicators of water-dispersible granules.

Embodiment 3

[0042] Embodiment 3: 25% mesotrione water-dispersible granule

[0043]

[0044] According to the above formula, the materials are pulverized by airflow, then mixed evenly and kneaded with water, extruded and granulated by a granulator, dried and sieved to obtain the product.

[0045] Determination of physical and chemical properties:

[0046] Moisture content 2.0%, particle size detection 99.5% through 75μm mesh, suspension rate 92%, wettability ≤ 1min, dispersibility 90%, persistent foaming (1min) 10ml, accelerated thermal storage stability qualified. It meets the quality and technical indicators of water-dispersible granules.

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Abstract

The invention relates to the field of pesticide preparations and discloses mesotrione water dispersible granules and a method for preparing the same. The mesotrione water dispersible granules comprise the following components in percentage by mass: 10 to 80 percent of mesotrione, 1 to 10 percent of wetting agent, 1 to 10 percent of dispersing agent, 1 to 3 percent of disintegrating agent, 0 to 5 percent of bonding agent and the balance of carrier. The mesotrione water dispersible granules are low in cost and packaging requirements, and simple in preparation process, and cause little environmental pollution; by the synergetic effect of the specially selected wetting agent and the dispersing agent, the control effect is enhanced and higher than that of the mesotrione suspending agent, and the consumption of the mesotrione water dispersible granules is reduced, so that the mesotrione water dispersible granules are quite suitable for popularization.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a mesotrione water-dispersible granule and a preparation method thereof. Background technique [0002] Mesotrione is a triketone herbicide developed by Syngenta. It is another HPPD inhibitor after pyrazole herbicides. Its mechanism of action is to inhibit p-hydroxypyruvate dioxygenase (HPPD) activity. HPPD can convert the amino acid tyrosine into plastoquinone, which is a cofactor of phytoene desaturase, a key enzyme in carotenoid biosynthesis. After using mesotrione for 3-5 days, yellowing symptoms appeared in the meristems of the plants, followed by scorching spots, which spread all over the plants after two weeks. Mesotrione is weakly acidic, and exists mainly in the form of anions that are not easily absorbed in most acidic soils. Mesotrione can be rapidly degraded, and the final metabolite is carbon dioxide. The average half-life in soil is 9 days, and it has the cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/14A01N41/10A01P13/00
Inventor 孙淑君卢桂鲜
Owner LIANBAO CROP TECH
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